PYRIDINE DERIVATIVES, THE PREPARATION AND USE THEREOF

摘要

The invention relates to new pyridine derivatives of formula < IMG > (I) wherein W and X, which may be the same or different, represent H, F, Cl, Br, I, NO2 or an optionally fluorine- or chlorine-substituted C1-C4 alkyl group, Y represents H, F, Cl, Br or an optionally fluorine- or chlorinesubstituted C1-C4 alkyl group, Z represents F, Cl, Br, an optionally fluorine- or chlorinesubstituted C1-C4 alkyl group or COOH or COO-(C1-C4 alkyl) and n represents 0 or 1, the preparation of the new compounds and their use as biocidal, particularly herbicidal active substances.